AS5263 datasheet(2/38 Pages) AMSCO

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AS5263

12-Bit Redundant Automotive Angle Position Sensor

www.austriamicrosystems.com/AS5263

Revision 1.4

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Datasheet

1 General Description

The AS5263 is a contactless magnetic angle position sensor for

accurate angular measurement over a full turn of 360º. A sub range

can be programmed to achieve the best resolution for the

application. The AS5263 includes two AS5163 in one QFN package.

It is a system-on-chip, combining integrated Hall elements, analog

front-end, digital signal processing and best in class automotive

protection features in a single device.

To measure the angle, only a simple two-pole magnet, rotating over

the center of the chip, is required. The magnet may be placed above

or below the IC.

The absolute angle measurement provides instant indication of the

magnet’s angular position with a resolution of 0.087º = 4096

positions per revolution. The start and end point of the sub segment

will be programmed with a resolution of 14-bit (0.022º= 16384 steps

per revolution). According to this resolution the adjustment of the

application specific mechanical positions are possible. The angular

output data is available over a 12-bit PWM signal or 12-bit ratiometric

analog output.

An internal voltage regulator with over voltage protection and reverse

polarity protection allows the AS5263 to operate in automotive

application up to a voltage to 27V. Programmability over the output

pin reduces the number of pins on the application connector. The

AS5263 is the ideal solution for safety critical applications due to the

redundant approach.

Figure 1. AS5263 Block Diagram

2 Key Features

360º contactless high resolution angular position encoding

User programmable start and end point of the application region

User programmable clamping levels and programming of the

transition point

Powerful analog output

- Short circuit monitor

- High driving capability for resistive and capacitive loads

Wide temperature range: -40ºC to +150ºC

Small Pb-free package: 32-pin QFN (7x7mm)

Broken GND and VDD detection over a wide range of different

load conditions

Simplified programming due to provided programming hardware

and software

Failure detection mode for magnet placement monitoring and

loss of power supply

Indication of high voltage condition

3 Applications

The AS5263 is ideal for automotive applications like transmission

gearbox position sensor, headlight position control, torque sensing,

valve position sensing, pedal position sensing, throttle position

sensing, and non-contact potentiometers.

VDD5_T

VDD3_T

VDD_T

GND_T

OUT_T

Sin

12-bit

PWM

Single pin

Interface

KDOWN_T

High voltage/

Reverse polarity

protection

Output

DSP

Angle

12-bit

DAC

Programmable

Angle

Full Turn Output

Top Silicon Die

Bottom Silicon Die

_T …… Pin of the Top Device

_B …… Pin of the Bottom Device

GND_B

VDD_B

VDD5_B

VDD3_B

OUT_B

KDOWN_B

AS5263

Cos

Hall Array

Frontend

Amplifier

ADC

CORDIC

14-bit

Zero

Position

OTP

OUT

Driver

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